Definitions for "Packet loss"
The loss of data between your computer and the server
Loss of parts of the packetized data that comprises the whole communication.
an error that occurs when data networks are overly congested. When pieces of data ("packets") are unable to be transmitted, they are sometimes "thrown out" by the network. Packet loss may or may not be disruptive to the recipient of the data, depending on the severity of loss.
Keywords:  bad, ping, lag, worse, complaint
a frequent connection complaint. Results in bad LAG
it happen when your connection is losing data packet while sending or receiving information from the server, the effect is similar as bad ping but worse